Measuring Devices

This page describes my home made measuring equipment. Most of the equipment is designed by others, so I have added (if available) the website URL of the designer. I also put some photographs near the article to show you what my home brew looks like (hi).

Dual Frequency GeneratorAfter attending a lecture of Cor, PA0CHN about testing the performance of HF receivers, I decided to make some test equipment to put my new DC Transceiver under test. For IP3 testing, I needed a dual frequency generator, so I built one myself by means of Cor’s design.

L/C MeterAnother interesting project was making the software of the AADE (Almost All Digital Electronics) L/C meter suitable for a 16F84.The original software was intended for a 16C622, which had 1Kb of memory more than a 16F84.
First the original software had to be disassembled to found out how it really works. Next, the entire program had to be made more efficient (because of the available memory space), and modified for the LCD that I should use.

RF MiliWatt meter OZ2CPUIn ‘Elektuur’ (Elektor) of October 2002 an article was written about the construction of a PIC controlled RF Watt meter. I found the design earlier on the site of OZ2CPU and I bookmarked it then for later use…. That moment was here and I ordered the print and software and got to work. Because the need of measuring frequencies in the GHz range, I added an extra logarithmic detector (AD8318) board, designed by F6BON.

Arduino controlled Step Attenuator + RF Power meterAlready a long time a Digital Attenuator and a RF Power meter was laying in my junkbox doing nothing.. So I decided to put both modules together in a small case and added an Arduino Nano and OLED display to it.